Two-step verification is an optional feature that adds more security to your WhatsApp account. You’ll see the two-step verification screen after you successfully register your phone number on WhatsApp. You can learn how to enable two-step verification in the article.
When you enable two-step verification, you have the option to enter your email address. This allows WhatsApp to email you a reset link in case you ever forget your PIN, and also helps safeguard your account.
To help you remember your PIN, WhatsApp will prompt you to periodically enter your PIN. Unfortunately, there isn’t an option to disable this without disabling the two-step verification feature.
NOTE: The two-step verification PIN is different from the 6-digit registration code you receive via SMS or phone call.
Two Step Verification in WhatsApp prevents someone unscrupulous from stealing your SIM card (or otherwise taking over your phone number) and using that to take over your account and impersonate you. With two-step enabled, an account reset requires you to have access to the phone number and enter a six-digit passcode.
Is it necessary to enable Whatsapp two step verification
It's very important to enable the two-step verification on WhatsApp, which adds more security to your account. When there is a registration of your WhatsApp account, after entering the 6-digit code, a personal PIN will be required to log into the account.